the link appearance, if an XLink link is established. The attribute linkShow can
have one of the following values:
- "newPane" - show the referred context in a new
pane
- "embedInContext" - embed the referred context in the current context
-
"replaceAndReturnToSource" - show the referred context instead of the current context,
and return automatically to the current context when the referred context has been
viewed
- "replaceAndNoReturn" - show the referred context instead of the current
context, but do not automatically return to the current context when the referred
context has been viewed.